Knights & Magic - MangaDex

A mecha otaku is reincarnated into another world as Ernesti "Eru" Echevalier. In this magical world, the country is protected by knights who pilot a kind of large humanoid weapon known as the Silhouette Knights. Dreaming of piloting these robots, Eru and his childhood friends, Archid and Adeltrud Olter, study Magic and work toward their goal together.

Maseki Gurume: Mamono no Chikara wo Tabeta Ore wa Saikyou! - MangaDex

Knights & Magic - MangaDex

Quartet Knights spin-off manga chapter 39 is out on manga dex, the link to it is in the comments! : r/BlackClover

Tenseishita Daiseijo wa, Seijo Dearu Koto wo Hitakakusu: A Tale of The Great Saint - MangaDex

Maseki Gurume: Mamono no Chikara wo Tabeta Ore wa Saikyou! - MangaDex

1001 Knights - MangaDex

JAPAN manga LOT: Knight's & Magic vol.1~12 Set

Knights & Magic - MangaDex

List of Reincarnation/Otherworldly Manga~!

Shinsei No Shiki - MangaDex

Knight's And Magic

Knights & Magic - MangaDex